An endoscopic ultrasound is a procedure in which the patient is sedated and a small flexible tube with an ultrasound is passed through your mouth or through your rectum to visualize the walls of your intestinal tract as well as surrounding organs. Endoscopic ultrasound is used to evaluate depth of any abnormal growths or lesions, stage tumor growth, and evaluate other abnormalities of liver, gall bladder, bile ducts, and pancreas. This test will require you to have nothing to eat or drink after midnight the day before the examination. If you are having a lower endoscopic ultrasound, you may need additional preparation with a bowel prep or enema solution which will be prescribed by your doctor.
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